PIC16F84A Microcontroller based Digital Clock

Hi Friends,

This is a PIC16F84A Microcontroller based digital clock. It displays hours, minutes and seconds using six 7 segments displays.
The circuit has three push button switches to reset and set hours and minutes.
It shows time in 12 hour format.

Use the following link to download schematic, source code and compiled hex file -

http://www.manelsoft.com/projects/pi...tal_clock.aspx

Attachment 7130 Attachment 7131

Have a nice day.! :D

Nice :)

But I have to ask.. There's a left over pin on portB, 3 more on PortA,
and the extra chip is only giving you four more pins than it's using.

Nice effort. However there seems to be no inter-digit blanking thereby giving the display a washed out appearance.

I suggest you modify this routine to create the blanking

Code:

---

DELAY                MOVWF PORTB
                DECFSZ        DEL,1
                GOTO        $-.1
                MOVLW 0FFH
                MOVWF PORTB
                CALL CLOCK
                RETURN

---

and remember to turn PORTB back to 0FFH to be able to read your keys

Cheers
Jerson